glow switch


Definition of glow switch

: an inert-gas discharge tube in which one electrode is a bimetallic strip that bends as the tube warms up and contacts the other electrode thus short-circuiting the tube and which is used as a starting switch in fluorescent lamps

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Cite this Entry

“Glow switch.” Dictionary, Merriam-Webster, Accessed 26 Jan. 2021.

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